Federal and state health officials on Friday released only limited information about the U.S. case: On April 24, the man flew from Riyadh — Saudi Arabia's capital and largest city — to the United States, with a stop in London. He landed in Chicago and took a bus to nearby Indiana. He didn't become sick until Sunday, the CDC said.
He went to the emergency room at Community Hospital in Munster the next day with a fever, cough and shortness of breath. He was admitted and tested for the MERS virus because he had traveled from the Middle East. The hospital said he was in good condition.
As a precaution, the hospital said it would monitor the man's family and health care workers who treated him for any signs of infection.
There's been a recent surge in MERS illnesses in Saudi Arabia; cases have tended to increase in the spring. Experts think the uptick may partly be due to more and better surveillance. Columbia's Lipkin has an additional theory — there may be more virus circulating in the spring, when camels are born.
The CDC has issued no warnings about travel to countries involved in the outbreak. However, anyone who develops fever, cough or shortness of breath within two weeks of traveling in or near the Arabian Peninsula should see their doctor and mention their travel history.